NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, all time — NPA 928
FRACTEL, LLC 19
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2021-11-22 928-400-0XXX 0000–0999Assigned FRACTEL, LLC 965H WIKIEUP AZ
2021-11-09 928-933-3XXX 3000–3999Assigned FRACTEL, LLC 965H PINETOP AZ
2021-10-25 928-732-5XXX 5000–5999Assigned FRACTEL, LLC 965H LKHAVASUCY AZ
2020-10-05 928-644-4XXX 4000–4999Assigned FRACTEL, LLC 965H COLORADOCY AZ
2020-10-05 928-744-4XXX 4000–4999Assigned FRACTEL, LLC 965H ALPINE AZ
2020-10-05 928-822-2XXX 2000–2999Assigned FRACTEL, LLC 965H FREDONIA AZ
2020-10-05 928-844-4XXX 4000–4999Assigned FRACTEL, LLC 965H LITTLEFLD AZ
2020-10-05 928-866-6XXX 6000–6999Assigned FRACTEL, LLC 965H MESQUITCRK AZ
2020-10-05 928-944-4XXX 4000–4999Assigned FRACTEL, LLC 965H AZ VILLAGE AZ
2020-10-05 928-946-3XXX 3000–3999Assigned FRACTEL, LLC 965H SAFFORD AZ
2020-10-05 928-966-6XXX 6000–6999Assigned FRACTEL, LLC 965H SAN CARLOS AZ
2020-09-28 928-465-8XXX 8000–8999Assigned FRACTEL, LLC 965H BULLHDCYN AZ
2020-06-03 928-544-4XXX 4000–4999Assigned FRACTEL, LLC 965H CASTLEROCK AZ
2020-06-03 928-842-5XXX 5000–5999Assigned FRACTEL, LLC 965H PARKER AZ
2020-06-03 928-877-7XXX 7000–7999Assigned FRACTEL, LLC 965H PARKER DAM AZ
2020-06-03 928-977-7XXX 7000–7999Assigned FRACTEL, LLC 965H YUMA AZ
2019-09-16 928-356-7XXX 7000–7999Assigned FRACTEL, LLC 965H PRESCOTT AZ
2019-09-16 928-356-9XXX 9000–9999Assigned FRACTEL, LLC 965H PRESCOTT AZ
2019-01-28 928-666-6XXX 6000–6999Assigned FRACTEL, LLC 965H FLAGSTAFF AZ

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.